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用PHP和MYSQL建立计数器过程详解_php基础

运行MYSQL.EXE mysql> create database counter;Query OK, 1 row affected (0.10 sec) mysql> use counter;Database changed mysql> create table tl(id integer(2),count integer(5));Query OK, 0 rows affected (0.21 sec) mysql> show columns from tl;+-------+--------+------+-----+---------+-------+| Field | Type   | Null | Key | Default | Extra |+-------+--------+------+-----+---------+-------+| id    | int(2) | YES  |     | NULL    |       || count | int(5) | YES  |     | NULL    |       |+-------+--------+------+-----+---------+-------+2 rows in set (0.05 sec) mysql> select * from tl;Empty set (0.08 sec) mysql> insert into tl(id,count) values(1,1);Query OK, 1 row affected (0.02 sec) mysql> select * from tl;+------+-------+| id   | count |+------+-------+|    1 |     1 |+------+-------+1 row in set (0.03 sec)

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